SECTION 033000 - CAST-IN-PLACE CONCRETE

Sludge Treatment Project Engineered Container Retrieval and Transfer System December 2011
Hardware Points Software Points
Point Name AI AO BI BO AV BV Sched Trend Alarm Show On Graphic
High Zone Temp ×
Low Zone Temp ×
Filter Change Required ×
Fan Failure ×
Fan in Hand ×
Fan Runtime Exceeded ×
1.10 ECRT-HP-501
Totals 3 1 2 1 2 0 1 9 6 9
Total Hardware ( 7 ) Total Software ( 18 )
A. Chiller Heat Pump - Run Conditions:
1. The chiller shall be enabled to run whenever it is commanded to be enabled by the chiller
manager program. The chiller shall run subject to its own internal safeties and controls.
2. The controls contractor shall coordinate with the chiller manufacturer to disable the
chiller whenever the ambient temperature drops below or rises above the manufacturer’s
written recommended operating temperatures. The heat pump water pump shall be
interlocked to turn off when the chiller is commanded off.
B. Heat Pump Water Pump (ECRT-P-502):
1. The heat pump water pump shall run anytime the heat pump chiller is called to run.
2. The heat pump water pump shall start prior to the heat pump chiller being enabled and
shall stop only after the heat pump chiller is disabled. The heat pump water pump shall
therefore have:
a. A user adjustable delay on start.
b. AND a user adjustable delay on stop.
3. The delay times shall be set appropriately to allow for orderly hydronic water system
start-up, shutdown and sequencing.
4. Alarms shall be provided as follows:
a. Heat Pump Water Pump Failure: Commanded on, but the status is off.
b. Heat Pump Water Pump Running in Hand: Commanded off, but the status is on.
c. Heat Pump Water Pump Runtime Exceeded: Status runtime exceeds a user
definable limit.
C. Heat Pump Chiller:
1. The heat pump chiller shall be enabled a user adjustable time after pump statuses are
proven on. The heat pump chiller shall therefore have a user adjustable delay on start.
2. The delay time shall be set appropriately to allow for orderly hydronic water system startup,
shutdown and sequencing.
3. The heat pump chiller shall run subject to its own internal safeties and controls.
4. Alarms shall be provided as follows:
a. Heat Pump Chiller Failure: Commanded on, but the status is off.
b. Heat Pump Chiller Running in Hand: Commanded off, but the status is on.
Contract 44577 KW Annex - Rev. D 44577-CSI-SPEC-001 230993 - 13